Child-resistant cap having inner and outer caps and a seal removing unit

ABSTRACT

A child-resistant cap, which includes an inner cap mounted at a vessel inlet of a vessel; an outer cap disposed at an outer circumferential surface of the inner cap so as to perform an idling with the inner cap; a rotation force transmitting portion formed between the inner cap and the outer cap for transmitting a rotation force of the outer cap to the inner cap; and a sealing member punching unit formed at the inner cap for forming a hole at the sealing member and thereby discharging contents stored in the vessel outwardly through the hole, is disclosed.

CROSS REFERENCE TO RELATED APPLICATION

The present application is a divisional under 37 C.F.R. §1.53(b) ofprior application Ser. No. 11/908,452, filed Sep. 12, 2007, by Hee KwonRHO, entitled CHILD-RESISTANT CAP HAVING INNER AND OUTER CAPS AND A SEALREMOVING UNIT, which application is a 35 U.S.C. §§371 national phaseconversion of PCT/KR2006/000764, filed Mar. 6, 2006, which claimspriority of Korean Application No. 10-2005-0021243, filed Mar. 15, 2005,Korean Application No. 10-2005-0027060, filed Mar. 31, 2005, KoreanApplication No. 10-2005-0034870, filed Apr. 27, 2005 and KoreanApplication No. 10-2005-0050807, filed Jun. 14, 2005 the disclosure ofwhich has been incorporated herein by reference. The PCT InternationalApplication was published in the English language.

TECHNICAL FIELD

The present invention relates to a child-resistant cap for protecting achild from contents stored in a vessel, and more particularly, to achild-resistant cap capable of facilitating a usage by separating asealing member sealed at a vessel inlet from the vessel with the cap atthe time of opening the cap, and capable of protecting a child moreeffectively from the contents.

BACKGROUND ART

Recently, a vessel for storing a poisonous drug, a vessel for storing adetergent, a vessel for storing a domestic medicine, etc. are requiredto be equipped with a child-resistant cap for preventing a child fromeasily opening a cap.

FIG. 1 is a sectional view of a child-resistant cap in accordance withthe conventional art.

The conventional child-resistant cap comprises an inner cap 154 mountedat a vessel inlet 152 formed at a vessel 150 and through which contentsinside the vessel 150 is discharged, an outer cap 156 disposed outsidethe inner cap 154 and moving the inner cap 154 in upper and lowerdirections within a certain range, and a rotation force transmittingportion 160 formed between the inner cap 154 and the outer cap 156 fortransmitting a rotation force of the outer cap 156 to the inner cap 154only when the outer cap 156 is downwardly pressed and thereby rotatingthe inner cap 154.

A sealing member 170 for protecting the contents inside the vessel 150is attached to an upper surface of the vessel inlet 152 of the vessel150.

A female screw portion 174 screw-coupled to a male screw portion 172formed at an outer circumferential surface of the vessel inlet 152 isformed at a lower side of the inner cap 154. Also, a stopping jaw 178for preventing the inner cap 154 from being separated from the outer cap156 is protruding from an inner circumferential surface of a lower endof the outer cap 156.

The rotation force transmitting portion 160 comprises a first hookingprotrusion 164 radially disposed at an outer upper surface of the innercap 154 with a certain gap and upwardly protruding with a certain width,and a second hooking protrusion 166 radially disposed at an inner uppersurface of the outer cap 156 with a certain gap and downwardlyprotruding with a certain width thus to be locked by the first hookingprotrusion 164.

According to the conventional child-resistant cap, the outer cap 156performs an idling at the outer circumferential surface of the inner cap154 under a state that the inner cap 154 is mounted at the vessel inlet152. Therefore, even when the outer cap 156 is rotated by a child, therotation force of the outer cap 156 is not transmitted to the inner cap154 and thereby the child can not easily open the outer cap 156.

When the outer cap 156 is downwardly pressed to open the cap, the secondhooking protrusion 166 formed at the outer cap 156 is inserted betweenthe first hooking protrusions 164 formed at the inner cap 154 thus to beengaged with each other. Under the state, if the outer cap 156 isrotated, the rotation force of the outer cap 156 is transmitted to theinner cap 154. As the result, the inner cap 154 is also rotated, and isseparated from the vessel inlet 152.

The cap is separated from the vessel inlet 152, and then the sealingmember 170 sealed at the vessel inlet 152 is removed by a user's hand oran additional tool such as a knife, etc. Then, the contents stored inthe vessel 150 is discharged through the vessel inlet 152.

However, in the conventional child-resistant cap, since the sealingmember 170 attached to the vessel inlet 152 has to be removed by auser's hand or an additional tool such as a knife, etc. after separatingthe vessel cap from the vessel 150, a usage inconvenience is caused.

Also, at the time of removing the sealing member 170 by the user's hand,the sealing member 170 is not smoothly separated from an edge of thevessel inlet 152 due to a strong adhesive force therebetween. As theresult, the use has to remove the sealing member 170 again by his hand.Herein, as the user's hand comes in contact with the vessel inlet 152, asanitary problem may be caused.

Furthermore, in the conventional child-resistant cap, the hookingprotrusions 164 and 166 are respectively formed at upper sides of theinner cap 154 and the outer cap 156, and there is no structure toupwardly lift the outer cap 156. As the result, the outer cap 156 isdownwardly moved by a self weight, and the second hooking protrusion 166of the outer cap 156 is engaged with the first hooking protrusion 164 ofthe inner cap 154. Accordingly, a problem that the cap is opened by achild is sometimes caused.

DISCLOSURE Technical Problem

Therefore, an object of the present invention is to provide achild-resistant cap capable of facilitating a usage by automaticallyremoving a sealing member at the time of opening the cap by integrallyforming a sealing member removing unit at the cap.

Another object of the present invention is to provide a child-resistantcap capable of solving a sanitary problem caused when a user's handcomes in contact with a vessel inlet so as to remove a sealing member byautomatically removing the sealing member by a sealing member removingunit.

Still another object of the present invention is to provide achild-resistant cap capable of effectively protecting a child by openingthe cap only by downwardly moving an outer cap with a force more than acertain degree under a state that an upwardly moved state of the outercap from an inner cap is maintained by an elastic force.

Yet another object of the present invention is to provide achild-resistant cap capable of preventing a sealing member removing unitfrom being pressed by an external force by protecting the sealing memberremoving unit mounted at an inner cap by installing a protection platefor protecting the sealing member removing unit at an upper surface ofan outer cap.

Yet still another object of the present invention is to provide achild-resistant cap capable of enhancing a safety by allowing a child todrink contents inside a vessel little by little when the cap is openedby mistake by discharging the contents little by little through a smallhole formed at a vessel inlet by forming the hole at a sealing member bypartially removing the sealing member.

Technical Solution

To achieve these and other advantages and in accordance with the purposeof the present invention, as embodied and broadly described herein,there is provided a child-resistant cap, comprising: an inner capmounted at a vessel inlet of a vessel; an outer cap disposed at an outercircumferential surface of the inner cap so as to perform an idling withthe inner cap; a rotation force transmitting portion disposed betweenthe inner cap and the outer cap for transmitting a rotation force of theouter cap to the inner cap only when the outer cap is downwardly movedwith a force more than a certain degree; and a sealing member removingunit formed at the inner cap for removing a sealing member sealed at thevessel inlet when the inner cap is detached from the vessel inlet, andstoring the removed sealing member in the inner cap.

An elastic member supported by an upper surface of the inner cap andproviding an elastic force to allow the outer cap to maintain anupwardly moved state from the inner cap is formed at an upper end of theouter cap.

The rotation force transmitting portion comprises a first hookingprotrusion protruding from a lower outer circumferential surface of theinner cap in a circumferential direction with the same gap with acertain width; and a second hooking protrusion protruding from an innercircumferential surface of the outer cap in a circumferential directionwith the same gap with a certain width, and engaged with the firsthooking protrusions when the outer cap is downwardly pressed.

The sealing member removing unit comprises a pressing plate disposed inthe inner cap so as to be movable in upper and lower directions; acutter formed at an edge of a lower surface of the pressing plate in acircumferential direction for penetrating the sealing member when thepressing plate is pressed and cutting the sealing member when the innercap is rotated; a hooking portion downwardly protruding at the lowersurface of the pressing plate for storing the sealing member cut by thecutter in the inner cap; and a connection portion formed between anouter circumferential surface of the pressing plate and an innercircumferential surface of the inner cap and elastically transformed sothat the pressing plate can be movable in upper and lower directions.

According to another embodiment of the present invention, thechild-resistant cap comprises: an inner cap mounted at a vessel inlet ofa vessel through which contents stored in the vessel is dischargedoutwardly; an outer cap disposed at an outer circumferential surface ofthe inner cap so as to be movable in upper and lower directions; aspline portion formed between an outer circumferential surface of theinner cap and an inner circumferential surface of the outer cap fortransmitting a rotation force of the outer cap to the inner cap; and alocking unit formed between the outer cap and the vessel inlet, forlocking the outer cap when the inner cap is mounted at the vessel inlet.

Advantageous Effects

The child-resistant cap according to the present invention having theabove structure and operations has the advantage in that since thesealing member removing unit is installed in the inner cap, if thepressing plate of the sealing member removing unit is firstly pressedand then the cap is opened, the sealing member is automatically removedfrom the vessel inlet. Accordingly, the usage convenience is enhanced.

In addition, the child-resistant cap according to the present inventionhas the advantage in that since the sealing member is automaticallyremoved by the sealing member removing unit, a sanitary problem causedwhen a user's hand comes in with the vessel inlet in order to remove thesealing member can be solved.

In addition, the child-resistant cap according to the present inventionhas the advantage in that since the outer cap can maintain an upwardlymoved position from the inner cap by the elastic member formed at theouter cap, the first hooking protrusion of the inner cap can beseparated from the second hooking protrusion of the outer cap.Accordingly, even if a child rotates the outer cap, the rotation forceof the outer cap is not transmitted to the inner cap and thus the childcan be more effectively protected.

In addition, the child-resistant cap according to the present inventionhas the advantage in that since an inclined surface is formed betweenthe first hooking protrusion and the second hooking protrusion, even ifa child rotates the outer cap, the second hooking protrusion slides onthe inclined surface of the first hooking protrusion. Accordingly, therotation force of the outer cap is not transmitted to the inner cap, andthus the child can be more effectively protected.

In addition, the child-resistant cap according to the present inventionhas the advantage in that since the sealing member removing unit formedat the inner cap is protected by the protection plate formed at theupper surface of the outer cap, the sealing member removing unit isprevented from being operated by an external force when exposedoutwardly.

In addition, the child-resistant cap according to the present inventionhas the advantage in that since a hole having a certain size is formedat the sealing member by partially removing the sealing member by thesealing member removing unit, contents stored in the vessel isdischarged outwardly little by little through the hole. Accordingly,even if the child drinks the contents stored in the vessel, a littleamount of the contents is provided to the child and thus the child canbe protected from the contents.

In addition, the child-resistant cap according to the present inventionhas the advantage in that a hole of a certain shape is formed at thesealing member by the sealing member punching unit formed at the innercap, and the hole can be variously constructed according to a kind ofthe contents stored in the vessel. Accordingly, the child can be moresafely protected.

DESCRIPTION OF DRAWINGS

FIG. 1 is a sectional view showing a child-resistant cap in accordancewith the conventional art;

FIG. 2 is a view showing an operation state of the child-resistant capin accordance with the conventional art;

FIG. 3 is a sectional view of a child-resistant cap according to a firstembodiment of the present invention;

FIG. 4 is a perspective view of an inner cap of the child-resistant capaccording to a first embodiment of the present invention;

FIG. 5 is a cut-perspective view of an outer cap of the child-resistantcap according to a first embodiment of the present invention;

FIG. 6 is a lateral view of a rotation force transmitting portion of thechild-resistant cap according to a first embodiment of the presentinvention;

FIG. 7 is a perspective view of a cutter of a sealing member removingunit of the child-resistant cap according to a first embodiment of thepresent invention;

FIG. 8 is a perspective view of a hooking portion of the sealing memberremoving unit of the child-resistant cap according to a first embodimentof the present invention;

FIGS. 9 and 10 are views showing an operation state of thechild-resistant cap according to the present invention;

FIG. 11 is a sectional view of a child-resistant cap according to asecond embodiment of the present invention;

FIG. 12 is a sectional view taken along line B-B of FIG. 11;

FIG. 13 is a sectional view taken along line C-C of FIG. 11;

FIG. 14 is a view showing an operation state of a child-resistant capaccording to a second embodiment of the present invention;

FIG. 15 is a perspective view of a child-resistant cap according to athird embodiment of the present invention;

FIG. 16 is a sectional view of the child-resistant cap according to athird embodiment of the present invention;

FIG. 17 is a perspective view of an inner cap of the child-resistant capaccording to a third embodiment of the present invention;

FIGS. 18 and 19 are views showing an operation state of thechild-resistant cap according to a third embodiment of the presentinvention;

FIG. 20 is a sectional view of a child-resistant cap according to afourth embodiment of the present invention;

FIGS. 21 and 22 are views showing an operation state of thechild-resistant cap according to a fourth embodiment of the presentinvention;

FIG. 23 is a perspective view of a child-resistant cap according to afifth embodiment of the present invention;

FIG. 24 is a sectional view of the child-resistant cap according to afifth embodiment of the present invention;

FIGS. 25 and 26 are views showing an operation state of thechild-resistant cap according to a fifth embodiment of the presentinvention;

FIG. 27 is a sectional view of a child-resistant cap according to asixth embodiment of the present invention;

FIG. 28 is a sectional view of a child-resistant cap according to aseventh embodiment of the present invention;

FIG. 29 is a view showing an operation state of the child-resistant capaccording to a seventh embodiment of the present invention;

FIG. 30 is a perspective view of a child-resistant cap according to aneighth embodiment of the present invention;

FIG. 31 is a sectional view of the child-resistant cap according to aneighth embodiment of the present invention;

FIG. 32 is a perspective view of a cutter of a sealing member removingunit of the child-resistant cap according to the eighth embodiment ofthe present invention;

FIG. 33 is a perspective view of a hooking portion of the sealing memberremoving unit of the child-resistant cap according to eighth embodimentof the present invention;

FIGS. 34 to 36 are views showing an operation state of thechild-resistant cap according to the eighth embodiment of the presentinvention;

FIG. 37 is a sectional view of a child-resistant cap according to aninth embodiment of the present invention;

FIGS. 38 to 40 are views showing examples of a punch of achild-resistant cap according to the ninth of the present invention; and

FIG. 41 is a view showing an operation state of the child-resistant capaccording to the ninth embodiment of the present invention;

MODE FOR INVENTION

Hereinafter, a child-resistant cap according to the present inventionwill be explained in more detail with reference to the attacheddrawings.

FIG. 3 is a sectional view of a child-resistant cap according to a firstembodiment of the present invention, FIG. 4 is a perspective view of aninner cap of the child-resistant cap according to a first embodiment ofthe present invention, and FIG. 5 is a cut-perspective view of an outercap of the child-resistant cap according to a first embodiment of thepresent invention.

The child-resistant cap according to a first embodiment of the presentinvention comprises an inner cap 14 mounted at a vessel inlet 12 throughwhich contents stored in a vessel 10 is discharged outwardly; an outercap 16 disposed at an outer circumferential surface of the inner cap 14so as to perform an idling with the inner cap 14; a rotation forcetransmitting portion 18 disposed between the inner cap 14 and the outercap 16 for transmitting a rotation force of the outer cap 16 to theinner cap 14 only when the outer cap 16 is downwardly moved with a forcemore than a certain degree; and a sealing member removing unit 22 formedat the inner cap 14 for removing a sealing member 20 sealed at thevessel inlet 12 when the inner cap 14 is detached from the vessel inlet12, and storing the removed sealing member 20 in the inner cap 14.

The vessel 10 stores contents that do harm to a child such as apoisonous drug, a detergent, a domestic medicine, etc. The sealingmember 20 for protecting the contents stored in the vessel 10 by sealingthe vessel inlet 12 is attached to the vessel inlet 12 through which thecontents inside the vessel 10 is discharged outwardly. The sealingmember 20 is formed of paper or an aluminum thin plate that can beeasily removed by a knife, etc.

The inner cap 14 has a cylindrical shape of which upper and lower endsare opened, and is provided with the sealing member removing unit 22therein. A female screw portion 26 screw-coupled to a male screw portion24 formed at an outer circumferential surface of the vessel inlet 12 isformed at a lower inner circumferential surface. Also, an adhesionportion 28 for adhering an upper end of the vessel inlet 12 isprotruding from an upper inner circumferential surface of the femalescrew portion 26 in a circumferential direction. A separation preventingjaw 30 for preventing the inner cap 14 from being separated from theouter cap 16 is protruding from a lower outer circumferential surface ofthe inner cap 14.

The outer cap 16 is inserted into the inner cap 14 so as to be movablein upper and lower directions, and has a cylindrical shape of whichupper and lower ends are opened. A plurality of convexo-concaveprotrusions 32 to facilitate to rotate the outer cap 16 by a user's handare formed at an outer circumferential surface of the outer cap 16, anda separation preventing protrusion 34 locked by the separationpreventing jaw 30 of the inner cap 14 is protruding from a lower innercircumferential surface of the outer cap 16.

A separation preventing protrusion 36 for preventing the inner cap 14from being separated towards the upper side of the outer cap 16 isformed at an upper end of the outer cap 16. Also, an elastic member 38supported at an upper surface of the inner cap 14 and maintaining amoved state of the outer cap 16 towards the upper side of the inner cap14 is formed at the separation preventing protrusion 36.

The elastic member 38 is formed of a thin film spontaneously curved andgenerating a certain elastic force, and an end thereof is supported byan upper surface of the inner cap 14. The elastic member 38 provides anelastic force to the outer cap 16 so that the outer cap 16 can maintainan upwardly moved state.

When the outer cap 16 is downwardly pushed, the elastic member 38 iselastically transformed and the outer cap 16 is downwardly moved. Whenthe force applied to the outer cap 16 is removed, the outer cap 16 isupwardly moved by the elastic force of the elastic member 38 thereby tobe restored to the original position.

As shown in FIGS. 4 and 5, the rotation force transmitting portion 18comprises a first hooking protrusion 40 protruding at a lower outercircumferential surface of the inner cap 14 in a circumferentialdirection with the same gap and with a certain width; and a secondhooking protrusion 42 protruding at an inner circumferential surface ofthe outer cap 16 in a circumferential direction with the same gap andwith a certain width, and inserted between the first hooking protrusions40 when the outer cap 16 is downwardly pressed thus to be locked by thefirst hooking protrusion 40.

The first hooking protrusion 40 is formed at an outer circumferentialsurface of the inner cap 14 with the same gap, and an inclined surface46 having a certain inclination angle is formed at an upper end of thefirst hooking protrusion 40. When the second hooking protrusion 42 isinserted into the first hooking protrusion 40 to some degree, the secondhooking protrusion 42 can slide on the inclined surface 46.

The second hooking protrusion 42 is formed at an inner circumferentialsurface of the outer cap 16 with the same gap, and the same inclinedsurface 48 as that of the first hooking protrusion 42 is formed at alower end of the second hooking protrusion 42. When the inclined surface48 comes in contact with the inclined surface 46 of the first hookingprotrusion 40, the second hooking protrusion 42 slides on the inclinedsurface 46.

As shown in FIG. 6, when the outer cap 16 is pressed by a child, theelastic force by the elastic member 38 is applied to the outer cap 16and thus the outer cap 16 is not completely pressed. Therefore, thesecond hooking protrusion 42 of the outer cap 16 is not completelyinserted into the first hooking protrusion 40 of the inner cap 14, andthus the inclined surface 48 of the second hooking protrusion 42 slideson the inclined surface 46 of the first hooking protrusion even if theouter cap 16 is rotated. As the result, the rotation force of the outercap 16 is not transmitted to the inner cap 14 thereby to prevent the capfrom being opened.

The sealing member removing unit 22 comprises a pressing plate 50disposed in the inner cap 14 so as to be movable in upper and lowerdirections and pressed by a user, a cutter 52 formed at an edge of alower surface of the pressing plate 50 in a circumferential directionfor penetrating the sealing member 20 when the pressing plate 50 ispressed and cutting the sealing member 20 when the cap is rotated, ahooking portion 54 downwardly protruding at the lower surface of thepressing plate 50 for locking the sealing member 20 so that the sealingmember 20 cut by the cutter 52 can be received in the inner cap 14, anda connection portion 56 formed between an outer circumferential surfaceof the pressing plate 50 and an inner circumferential surface of theinner cap 14 for guiding the pressing plate 50 to be movable in upperand lower directions and maintaining a moved position of the pressingplate 50 by its elastic force.

The pressing plate 50 is formed as a disc shape having a diametersmaller than an inner diameter of the inner cap 14, and is preferablydisposed at a position lower than an upper surface of the inner cap 14.

As shown in FIG. 7, the cutter 52 comprises a plurality of supportingportions 60 formed at an edge of a lower surface of the pressing plate50 with the same gap, a first cutting portion 62 sharply formed at alower end of the supporting portion 60 and downwardly moved when thepressing plate 50 is pressed for penetrating the sealing member 20, anda second cutting portion 64 formed on at least one side surface of bothside surfaces of the supporting portion 60 for cutting the sealingmember 20 as a circular shape with being rotated under a contact stateto an inner circumferential surface of the vessel inlet 12 when theinner cap 14 is rotated.

As shown in FIG. 8, the hooking portion 54 comprises a supporting rod 66extending from a lower surface of the pressing plate 50 with a certainlength for penetrating the sealing member 20, and at least one hookingprotrusion 68 formed at a lateral surface of the supporting rod 66 forstopping the sealing member 20 so that the sealing member 20 cut by thecutter 52 can be stored in the inner cap 14.

The supporting rod 66 is formed as a bar type extending towards a lowerdirection of the pressing plate 50, and a punch portion 70 forpenetrating the sealing member 20 is sharply formed at an end of thesupporting rod 66.

The hooking protrusion 68 is formed to be elastically transformed, andis upwardly bent at the time of penetrating the sealing member 20thereby to pass through a hole formed by the punch portion 70 and to beinserted into the sealing member 20. Then, the hooking protrusion 68 isextended into the original state after being positioned at an inner sideof the sealing member 20 thereby to be hooked at the inner surface ofthe sealing member 20.

At least one hooking protrusion 68 is perpendicularly extending fromboth side surfaces of the supporting rod 66 with a certain length. Theconnection portion 56 is formed between an outer circumferential surfaceof the pressing plate 50 and an inner circumferential surface of theinner cap 14 as a thin film having a dome shape.

The connection portion 56 is elastically transformed when the pressingplate 50 is pressed by a force more than a certain degree, therebyguiding the pressing plate 50 to be moved in a lower direction.

The connection portion 56 elastically maintains a current position ofthe pressing plate 50. That is, when the pressing plate 50 is upwardlyprotruding, the connection portion 56 has a convex dome shape andmaintains the current state of the pressing plate 50. However, when thepressing plate 50 is pressed by a force more than a certain degree, theconnection portion 56 is elastically transformed into a concave shapeand maintains the pressed state of the pressing plate 50.

An operation of the child-resistant cap according to the presentinvention will be explained.

FIGS. 9 and 10 are views showing an operation of the child-resistant capaccording to the present invention.

When the pressing plate 50 formed at the inner cap 14 is downwardlypressed in order to discharge the contents stored in the vessel 10outwardly, the connection portion 56 is elastically transformed and thepressing plate 50 is downwardly moved. Then, the first cutting portion62 of the cutters 52 formed at a lower surface of the pressing plate 50penetrates an edge of the sealing member 20, and the supporting rod 66of the hooking portion 54 penetrates a center of the sealing member 20.

At the time of penetrating the sealing member 20, the hooking protrusion68 of the hooking portion 54 is upwardly bent thus to pass through ahole penetrated by the punch portion 70 of the supporting rod 66. Oncethe hooking protrusion 68 is positioned at an inner surface of thesealing member 20, it is elastically transformed into the original stateas an extended state.

Then, when the outer cap 16 is downwardly moved by a user's hand with aforce more than a certain degree, the elastic member 38 is elasticallytransformed. As the result, the second hooking protrusion 42 formed atthe outer cap 16 is inserted between the first hooking protrusions 40formed at the inner cap 14 thereby to be engaged with each other. Also,when the outer cap 16 is rotated, the rotation force of the outer cap 16is transmitted to the inner cap 14, and thus the inner cap 14 isseparated from the vessel inlet 12 with being rotated.

Herein, the cutter 52 is rotated under a contact state to an innercircumferential surface of the vessel inlet 12, and the second cuttingportion 64 formed at both side surfaces of the supporting portion 60cuts the sealing member 20 as a circular shape. Since the sealing member20 that has been removed from the vessel inlet 12 is locked by thehooking protrusion 68 of the hooking portion 54, it is detached from thevessel inlet 12 together with the inner cap 14 thus to be stored in theinner cap 14.

If the contents stored in the vessel 10 of which sealing member 20 hasbeen removed is discharged outwardly through the vessel inlet 12 andthen the cap is mounted at the vessel inlet 12 again, the outer cap 16is moved towards the upper side of the inner cap 14 and the firsthooking protrusion 40 is spaced from the second hooking protrusion 42.Accordingly, even if a child rotates the outer cap 16, the rotationforce of the outer cap 16 is not transmitted to the inner cap 14.

Also, even if the child downwardly moves the outer cap 16, the outer cap16 is not completely moved downwardly due to the weak force by theelastic force of the elastic member 38. Under the state, even if theouter cap 16 is rotated, the inclined surface 48 of the second hookingprotrusion 42 slides on the inclined surface 46 of the first stoppingprotrusion 40 and thus the inner cap 14 is not opened.

FIG. 11 is a sectional view of a child-resistant cap according to asecond embodiment of the present invention, FIG. 12 is a sectional viewtaken along line B-B of FIG. 11, and FIG. 13 is a sectional view takenalong line C-C of FIG. 11.

The child-resistant cap according to a second embodiment of the presentinvention comprises: an inner cap 80 mounted at a vessel inlet 12 of avessel 10 through which contents stored in the vessel 10 is dischargedoutwardly; an outer cap 82 disposed at an outer circumferential surfaceof the inner cap 80 so as to be movable in upper and lower directions; aspline portion 85 formed between an outer circumferential surface of theinner cap 80 and an inner circumferential surface of the outer cap 82for transmitting a rotation force of the outer cap 82 to the inner cap80; a locking unit 84 formed between the outer cap 82 and the vesselinlet 12, for locking the outer cap 82 when the inner cap 80 is mountedat the vessel inlet 12; and a sealing member removing unit 22 formed atthe inner cap 80 for removing the sealing member 20 sealed at the vesselinlet 12 when the inner cap 80 is detached from the vessel inlet 12, andstoring the removed sealing member 20 in the inner cap 80.

The inner cap 80 has a cylindrical shape of which upper and lower endsare opened, and is provided with the sealing member removing unit 22therein. A female screw portion 88 screw-coupled to a male screw portion86 formed at an outer circumferential surface of the vessel inlet 12 isformed at a lower inner circumferential surface of the inner cap 80.

The outer cap 16 has a cylindrical shape of which upper and lower endsare opened, and stoppers 90 and 92 for preventing the inner cap 80 frombeing separated are respectively formed at the upper and lower ends. Aplurality of convexo-concave protrusions 94 to facilitate to rotate theouter cap 16 by a user's hand are formed at an outer circumferentialsurface of the outer cap 16.

The spline portion 85 comprises a first hooking protrusion 81 formed atan outer circumferential surface of the inner cap 80 in acircumferential direction with the same gap, and a second hookingprotrusion 83 formed at an inner circumferential surface of the outercap 82 in a circumferential direction with the same gap and gear-engagedwith the first hooking protrusion 81.

As shown in FIG. 13, the locking unit 84 comprises a first lockingprotrusion 98 formed at an edge of a flange portion 96 in acircumferential direction with the same gap, the flange portion 96extending from an outer circumferential surface of a lower surface ofthe vessel inlet 12 as a disc shape; and a second locking protrusion 100formed at an inner circumferential surface of a lower end of the outercap 82 with the same gap and inserted into the first locking protrusion98 thus to be locked.

The first locking protrusion 98 is formed to have a gear shape, and isprovided with an inclined surface 102 having a certain inclination angleat one side thereof. The second locking protrusion 100 has the sameinclined surface 104 as the inclined surface 102 of the first lockingprotrusion 98 at a surface facing the inclined surface 102 of the firstlocking protrusion 98.

When the outer cap 82 is rotated thus to be downwardly moved, the secondlocking protrusion 100 formed at the outer cap 82 is inserted into thefirst locking protrusion 98 formed at the vessel inlet 12. Herein, ifthe inner cap 80 does not completely cover the vessel inlet 12, theinclined surface 104 of the second locking protrusion 100 slides on theinclined surface 102 of the first locking protrusion 98 thus to berotated. On the contrary, if the inner cap 80 completely covers thevessel inlet, the second locking protrusion 100 is inserted between thefirst locking protrusions 98 and thus the outer cap 82 is prevented frombeing rotated.

The sealing member removing unit 22 has the same construction andoperation as that aforementioned in the first embodiment, and thus itsdetail explanation will be omitted.

An operation of the child-resistant cap according to the secondembodiment of the present invention will be explained.

FIG. 14 is a view showing an operation state of a child-resistant capaccording to a second embodiment of the present invention.

When the outer cap 82 is upwardly pulled, the outer cap 82 is slid onthe outer circumferential surface of the inner cap 80 and is upwardlymoved. Herein, the second locking protrusion 100 formed at the outer cap82 is detached from the first locking protrusion 98 formed at the vesselinlet 12, and thus the locked state of the outer cap 82 is released.

Under the state, if the outer cap 82 is rotated, the inner cap 80spline-coupled to the outer cap 82 is together rotated and is detachedfrom the vessel inlet 12.

Herein, the sealing member 20 sealed at the vessel inlet 12 is removedby the sealing member removing unit 22, and is stored in the inner cap80.

Then, if the inner cap 80 is mounted at the vessel inlet 12 again, thesecond locking protrusions 100 formed at the inner circumferentialsurface of the outer cap 82 are inserted into the first lockingprotrusions 98 formed at the vessel inlet 12. Accordingly, the outer cap82 is locked and thus is not opened by a child.

FIG. 15 is a perspective view of a child-resistant cap according to athird embodiment of the present invention, FIG. 16 is a sectional viewof the child-resistant cap according to a third embodiment of thepresent invention, and FIG. 17 is a perspective view of an inner cap ofthe child-resistant cap according to a third embodiment of the presentinvention.

The child-resistant cap according to a third embodiment of the presentinvention comprises: an inner cap 14 mounted at a vessel inlet 12 of avessel 10 through which contents stored in the vessel 10 is dischargedoutwardly; an outer cap 16 disposed at an outer circumferential surfaceof the inner cap 14 so as to perform an idling with the inner cap 14; arotation force transmitting portion 18 formed between the inner cap 14and the outer cap 16 for transmitting a rotation force of the outer cap16 to the inner cap 14 only when the outer cap 16 is downwardly moved bya force more than a certain degree; a sealing member removing unit 22formed at the inner cap 14 for removing a sealing member 20 sealed atthe vessel inlet 12 when the inner cap 14 is detached from the vesselinlet 12, and storing the removed sealing member 20 in the inner cap 14;and a protection plate 13 movably mounted at an upper surface of theouter cap 16 for protecting the sealing member removing unit 22 mountedat the inner cap 14.

The inner cap 14 and the outer cap 16 have the same construction andoperation as those aforementioned in the first embodiment, and thustheir detail explanation will be omitted.

The protection plate 13 is formed at an upper inner circumferentialsurface of the outer cap 16 with a certain gap as a disc shape. Also, aplurality of connection ribs 17 cut when the protection plate 13 isdownwardly moved and maintaining a fixed state of the protection plate13 to the outer cap 16 are formed between the outer circumferentialsurface of the protection plate 13 and the upper inner circumferentialsurface of the outer cap 16.

The connection ribs 17 is formed to be cut when a certain force isapplied thereto, and guides the protection plate 13 to be downwardlymoved when the protection plate 13 is pressed with being cut.

A plurality of guide ribs 15 are connected between an outercircumferential surface of the protection plate 13 and an upper innercircumferential surface of the outer cap 16 with a certain gap, therebyguiding the protection plate 13 to be downwardly moved under a connectedstate to the outer cap 16.

The guide rib 15 is formed to have an ‘S’ shape, and has one endconnected to the inner circumferential surface of the outer cap 16 andanother end connected to the outer circumferential surface of theprotection plate 13. When the protection plate 13 is downwardly moved,the guide rib 15 is extended thereby to guide the protection plate 13 tobe downwardly moved and to maintain the connected state of theprotection plate 13 to the outer cap 16. The guide rib 15 is insertedinto an insertion groove 21 formed at the outer circumferential surfaceof the protection plate 13.

A connection belt 19 having a thin thickness is formed at the ‘S’-curvedportion of the guide rib 15, so that the guide rib 15 maintains the‘S’-shape. The connection belt 19 is cut when the protection plate 13 isdownwardly moved.

The protection plate 13 protects the sealing member removing unit 22from an external force by preventing the sealing member removing unit 22from being exposed outwardly. When the protection plate 13 is downwardlypressed by a user in order to operate the sealing member removing unit22, the connection rib 17 connected between the protection plate 13 andthe outer cap 16 is cut, the protection plate 13 is downwardly moved,and a pressing plate 50 of the sealing member removing unit 22 ispressed. Herein, the guide rib 15 having an ‘S’ shape and connectedbetween the protection plate 13 and the outer cap 16 is extended,thereby guiding the protection plate 13 to be downwardly moved andmaintaining the connected state of the protection plate 13 to the outercap 16.

The rotation force transmitting portion 18 comprises a first hookingprotrusion 40 protruding from a lower outer circumferential surface ofthe inner cap 14 in a circumferential direction with the same gap andwith a certain width; and a second hooking protrusion 42 protruding froman inner circumferential surface of the outer cap 16 in acircumferential direction with the same gap and with a certain width,and engaged with the first hooking protrusions 40 when the outer cap 16is downwardly pressed.

The first hooking protrusion 40 and the second hooking protrusion 42have the same construction as those aforementioned in the firstembodiment, and thus their detail explanation will be omitted.

The sealing member removing unit 22 comprises a pressing plate 50disposed in the inner cap 14 so as to be movable in upper and lowerdirections; a cutter 52 formed at an outer edge of a lower surface ofthe pressing plate 50 for penetrating the sealing member 20 when thepressing plate 50 is pressed and cutting the sealing member 20 when thecap is rotated; a hooking portion 54 downwardly protruding at a lowersurface of the pressing plate 50 for hooking the sealing member 20 sothat the sealing member 20 cut by the cutter 52 can be stored in theinner cap 14 and a connection portion 56 formed between an outercircumferential surface of the pressing plate 50 and an innercircumferential surface of the inner cap 14 for guiding the pressingplate 50 to be movable in upper and lower directions and maintaining amoved position of the pressing plate 50 by its elastic force.

The sealing member removing unit 22 has the same construction andoperation as that aforementioned in the first embodiment, and thus itsdetail explanation will be omitted.

An operation of the child-resistant cap according to the thirdembodiment of the present invention will be explained.

FIGS. 18 and 19 are views showing an operation state of thechild-resistant cap according to a third embodiment of the presentinvention.

When the protection plate 13 connected to the outer cap 16 is pressed bya user in order to discharge the contents stored in the vessel 10outwardly, the connection rib 17 connected between the protection plate13 and the outer cap 16 is cut, and the protection plate 13 isdownwardly moved thereby to press the pressing plate 50 of the sealingmember removing unit 22. Herein, the guide rib 15 having an ‘S’ shapeand connected between the protection plate 13 and the outer cap 16 isextended thereby to guide the protection plate 13 to be downwardly movedand to maintain the connected state of the protection plate 13 to theouter cap 16.

Then, when the pressing plate 50 is downwardly moved by the protectionplate 13, the connection portion 56 is elastically transformed. Then,the first cutting portion 62 of the cutters 52 formed at a lower surfaceof the pressing plate 50 penetrates an edge of the sealing member 20,and the supporting rod 66 of the hooking portion 54 penetrates a centerof the sealing member 20.

At the time of penetrating the sealing member 20, the hooking protrusion68 of the hooking portion 54 is upwardly bent thus to pass through ahole penetrated by the punch portion 70 of the supporting rod 66. Oncethe hooking protrusion 68 is positioned at an inner surface of thesealing member 20, it is elastically transformed into the original stateas an extended state.

Then, when the outer cap 16 is downwardly moved by a user's hand with aforce more than a certain degree, the elastic member 38 is elasticallytransformed. As the result, the second hooking protrusion 42 formed atthe outer cap 16 is inserted between the first hooking protrusions 40formed at the inner cap 14 thereby to be engaged with each other. Also,when the outer cap 16 is rotated, the rotation force of the outer cap 16is transmitted to the inner cap 14, and thus the inner cap 14 isseparated from the vessel inlet 12 with being rotated.

Herein, the cutter 52 is rotated under a contact state to an innercircumferential surface of the vessel inlet 12, and the second cuttingportion 64 formed at both side surfaces of the supporting portion 60cuts the sealing member 20 as a circular shape. Since the sealing member20 that has been removed from the vessel inlet 12 is locked by thehooking protrusion 68 of the hooking portion 54, it is detached from thevessel inlet 12 together with the inner cap 14 thus to be stored in theinner cap 14.

If the contents stored in the vessel 10 of which sealing member 20 hasbeen removed is discharged outwardly through the vessel inlet 12 andthen the cap is mounted at the vessel inlet 12 again, the outer cap 16is moved towards the upper side of the inner cap 14 by the elastic forceof the elastic member 38 and the first hooking protrusion 40 is spacedfrom the second hooking protrusion 42. Accordingly, even if a childrotates the outer cap 16, the rotation force of the outer cap 16 is nottransmitted to the inner cap 14.

Also, even if the child downwardly moves the outer cap 16, the outer cap16 is not completely moved downwardly due to the weak force by theelastic force of the elastic member 38. Under the state, even if theouter cap 16 is rotated, the inclined surface 48 of the second hookingprotrusion 42 slides on the inclined surface 46 of the first stoppingprotrusion 40 and thus the inner cap 14 is not opened.

FIG. 20 is a sectional view of a child-resistant cap according to afourth embodiment of the present invention.

The child-resistant cap according to a fourth embodiment of the presentinvention comprises: an inner cap 80 mounted at a vessel inlet 12 of avessel 10 through which contents stored in the vessel 10 is dischargedoutwardly; an outer cap 82 disposed at an outer circumferential surfaceof the inner cap 80 so as to be movable in upper and lower directions; aspline portion 85 formed between an outer circumferential surface of theinner cap 80 and an inner circumferential surface of the outer cap 82for transmitting a rotation force of the outer cap 82 to the inner cap80; a locking unit 84 formed between the outer cap 82 and the vesselinlet 12, for locking the outer cap 82; a sealing member removing unit22 formed at the inner cap 80 for removing the sealing member 20 sealedat the vessel inlet 12 when the inner cap 80 is detached from the vesselinlet 12, and storing the removed sealing member 20 in the inner cap 80;and a protection plate 13 mounted at an upper surface of the outer cap82 so as to be downwardly movable for protecting the sealing memberremoving unit 22 mounted at the inner cap 80.

The inner cap 80 has a cylindrical shape of which upper and lower endsare opened, and is provided with the sealing member removing unit 22therein. A female screw portion 88 screw-coupled to a male screw portion86 formed at an outer circumferential surface of the vessel inlet 12 isformed at a lower inner circumferential surface of the inner cap 80.

The outer cap 82 has a cylindrical shape of which upper and lower endsare opened, and stoppers 90 and 92 for preventing the inner cap 80 frombeing separated are respectively formed at the upper and lower ends. Aplurality of convexo-concave protrusions 94 to facilitate to rotate theouter cap 82 by a user's hand are formed at an outer circumferentialsurface of the outer cap 82.

The protection plate 13 is formed at an upper inner circumferentialsurface of the outer cap 82 with a certain gap as a disc shape. Sincethe protection plate 13 has the same construction as that aforementionedin the third embodiment, its detail explanation will be omitted.

The spline portion 85 comprises a first hooking protrusion 81 formed atan outer circumferential surface of the inner cap 80 in acircumferential direction with the same gap, and a second hookingprotrusion 83 formed at an inner circumferential surface of the outercap 82 in a circumferential direction with the same gap and gear-engagedwith the first hooking protrusion 81.

The locking unit 84 comprises a first locking protrusion 98 formed at anedge of a flange portion 96 in a circumferential direction with the samegap, the flange portion 96 extending from an outer circumferentialsurface of a lower surface of the vessel inlet 12 as a disc shape; and asecond locking protrusion 100 formed at an inner circumferential surfaceof a lower end of the outer cap 82 with the same gap and inserted intothe first locking protrusion 98 thus to be locked.

The first locking protrusion 98 and the second locking protrusion 100 ofthe locking unit 84 have the same structure and operation as thoseaforementioned in the second embodiment, and thus their detailexplanation will be omitted.

The sealing member removing unit 22 has the same structure and operationas those aforementioned in the first embodiment, and thus their detailexplanation will be omitted.

An operation of the child-resistant cap according to a fourth embodimentof the present invention will be explained.

FIGS. 21 and 22 are views showing an operation of the child-resistantcap according to a fourth embodiment of the present invention.

When the protection plate 13 is downwardly pressed, the sealing memberremoving unit 22 penetrates the sealing member 20 sealed at the vesselinlet 12 as aforementioned in the first embodiment.

Then, when the outer cap 82 is upwardly pulled, the outer cap 82 is slidon the outer circumferential surface of the inner cap 80 and is upwardlymoved. Herein, the second locking protrusion 100 formed at the outer cap82 is detached from the first locking protrusion 98 formed at the vesselinlet 12, and thus the locked state of the outer cap 82 is released.

Under the state, if the outer cap 82 is rotated, the inner cap 80spline-coupled to the outer cap 82 is together rotated and is detachedfrom the vessel inlet 12.

Herein, the sealing member 20 sealed at the vessel inlet 12 is removedby the sealing member removing unit 22, and is stored in the inner cap80.

Then, if the inner cap 80 is mounted at the vessel inlet 12 again, thesecond locking protrusions 100 formed at the inner circumferentialsurface of the outer cap 82 are inserted into the first lockingprotrusions 98 formed at the vessel inlet 12. Accordingly, the outer cap82 is locked and thus is not opened by a child.

FIG. 23 is a perspective view of a child-resistant cap according to afifth embodiment of the present invention, and FIG. 24 is a sectionalview of the child-resistant cap according to a fifth embodiment of thepresent invention.

The child-resistant cap according to a fifth embodiment of the presentinvention comprises an inner cap 14 mounted at a vessel inlet 12 throughwhich contents stored in a vessel 10 is discharged outwardly; an outercap 16 disposed at an outer circumferential surface of the inner cap 14so as to perform an idling with the inner cap 14; a rotation forcetransmitting portion 18 disposed between the inner cap 14 and the outercap 16 for transmitting a rotation force of the outer cap 16 to theinner cap 14 only when the outer cap 16 is downwardly moved with a forcemore than a certain degree; and a sealing member removing unit 22 formedat the outer cap 16 for removing a sealing member 20 sealed at thevessel inlet 12 and storing the removed sealing member 20 in the innercap 14.

The inner cap 14 has a cylindrical shape of which upper and lower endsare opened. A female screw portion 26 screw-coupled to a male screwportion 24 formed at an outer circumferential surface of the vesselinlet 12 is formed at a lower inner circumferential surface of the innercap 14. Also, an adhesion portion 28 for adhering an upper end of thevessel inlet 12 is protruding from an upper inner circumferentialsurface of the female screw portion 26 in a circumferential direction. Aseparation preventing jaw 30 for preventing the inner cap 14 from beingseparated from the outer cap 16 is protruding from a lower outercircumferential surface of the inner cap 14.

The outer cap 16 is inserted into the inner cap 14 so as to be movablein upper and lower directions, and has a cylindrical shape of whichupper and lower ends are opened. A plurality of convexo-concaveprotrusions 32 to facilitate to rotate the outer cap 16 by a user's handare formed at an outer circumferential surface of the outer cap 16, anda separation preventing protrusion 34 locked by the separationpreventing jaw 30 of the inner cap 14 is protruding from a lower innercircumferential surface of the outer cap 16.

A separation preventing protrusion 36 for preventing the inner cap 14from being separated towards the upper side of the outer cap 16 isextending at an upper inner circumferential surface of the outer cap 16as a ring shape. Also, an elastic member 38 supported at an uppersurface of the inner cap 14 and maintaining a moved state of the outercap 16 towards the upper side of the inner cap 14 is formed at a lowersurface of the separation preventing protrusion 36. The sealing memberremoving unit 22 is formed at an inner circumferential surface of theseparation preventing protrusion 36.

The elastic member 38 is formed of a thin film spontaneously curved andgenerating a certain elastic force, and an end thereof is supported byan upper surface of the inner cap 14. The elastic member 38 provides anelastic force to the outer cap 16 so that the outer cap 16 can maintainan upwardly moved state.

When the outer cap 16 is downwardly pushed, the elastic member 38 iselastically transformed and the outer cap 16 is downwardly moved. Whenthe force applied to the outer cap 16 is removed, the outer cap 16 isupwardly moved by the elastic force of the elastic member 38 thereby tobe restored to the original position.

The rotation force transmitting portion 18 has the same construction andoperation as that aforementioned in the first embodiment, and thus itsdetail explanation will be omitted.

The sealing member removing unit 22 comprises a pressing plate 50 fixedat an upper inner circumferential surface of the outer cap 16 anddownwardly moved with the locked state being released when pressed by acertain force; a plurality of cutters 52 formed at an outer edge of alower surface of the pressing plate 50 in a circumferential directionfor penetrating the sealing member 20 when the pressing plate 50 ispressed and cutting the sealing member 20 when the cap is rotated; ahooking portion 54 downwardly protruding at a lower surface of thepressing plate 50 for hooking the sealing member 20 so that the sealingmember 20 cut by the cutter 52 can be stored in the outer cap 16; and alocking rib 200 formed between an outer circumferential surface of thepressing plate 50 and an inner circumferential surface of the outer cap16 for maintaining a fixed state of the pressing plate 50 to an innercircumferential surface of the outer cap 16 and releasing the lockedstate of the pressing plate 50 with being cut when the pressing plate 50is pressed.

The pressing plate 50 is disposed at an upper inner circumferentialsurface of the outer cap 16 with a certain gap. The pressing plate 50 isformed as a disc shape having a diameter almost the same as an innerdiameter of the outer cap 16, and is disposed at an innercircumferential surface of the outer cap 16 so as to be movable in upperand lower directions.

The locking rib 200 is connected between an outer circumferentialsurface of the pressing plate 50 and an inner circumferential surface ofthe outer cap 16 for maintaining a fixed state of the pressing plate 50to the outer cap 16 and releasing the locked state of the pressing plate50 to the outer cap 16 with being cut when the pressing plate 50 ispressed by a force more than a certain degree.

The locking rib 200 is formed as a thin film that can be cut when acertain force is applied thereto, and is cut when the pressing plate 50is pressed by a force more than a certain degree thereby to guide thepressing plate 50 to be downwardly moved.

A plurality of guide ribs 202 are connected between an outercircumferential surface of the pressing plate 50 and an innercircumferential surface of the outer cap 16 with a certain gap, therebyguiding the pressing plate 50 to be downwardly moved under a connectedstate to the outer cap 16 when the pressing plate 50 is downwardlymoved.

The guide rib 202 is formed to have an ‘S’-shape, and has one endconnected to the inner circumferential surface of the outer cap 16 andanother end connected to the outer circumferential surface of thepressing plate 50. When the pressing plate 50 is downwardly moved, theguide rib 202 is extended thereby to guide the pressing plate 50 to bedownwardly moved and to maintain the connected state of the pressingplate 50 to the outer cap 16.

The guide rib 202 is disposed in a state of being inserted into aninsertion groove 204 formed at the outer circumferential surface of thepressing plate 50 and an insertion groove 206 formed at the innercircumferential surface of the outer cap 16.

A connection belt 208 having a thin thickness is formed between the twoinsertion grooves 204 and 206 and the curved portion of the guide rib202, so that the guide rib 202 maintains the ‘S’-shape. The connectionbelt 208 is cut when the pressing plate 50 is downwardly moved.

A lift supporting portion 210 for guiding the pressing plate 50 to beperpendicularly moved in the outer cap 16 and rotating the pressingplate 50 with the outer cap 16 when the outer cap 16 is rotated isformed between the pressing plate 50 and the outer cap 16.

The lift supporting portion 210 comprises at least one guide groove 212perpendicularly formed at an edge of a lower surface of the outer cap 16towards a lower direction, and at least one guide protrusion 214 formedat the outer circumferential surface of the pressing plate 50 andinserted into the guide groove 212 thus to be moved along the guidegroove 212 in upper and lower directions.

When the pressing plate 50 is downwardly moved, the guide protrusion 214formed at the outer circumferential surface of the pressing plate 50 ismoved along the guide groove 212 formed at the inner circumferentialsurface of the outer cap 16 in upper and lower directions. Therefore,the lift supporting portion 210 guides the pressing plate 50 to beperpendicularly moved towards a lower direction, and transmits arotation force of the outer cap 16 to the pressing plate 50 when theouter cap 16 is rotated thereby to rotate the pressing plate 50.

The cutter 54 and the hooking portion 54 have the same construction andoperation as those aforementioned in the first embodiment, and thustheir detail explanation will be omitted.

An operation of the child-resistant cap according to a fifth embodimentof the present invention will be explained.

FIGS. 25 and 26 are views showing an operation of the child-resistantcap according to the fifth embodiment of the present invention.

When the pressing plate 50 connected to the outer cap 16 is downwardlypressed by a user in order to discharge the contents stored in thevessel 10 outwardly, the locking rib 200 connected between the pressingplate 50 and the outer cap 16 is cut, and the pressing plate 50 isdownwardly moved. Herein, the guide rib 202 having an ‘S’ shape andconnected between the pressing plate 50 and the outer cap 16 is extendedthereby to guide the pressing plate 50 to be downwardly moved and tomaintain the connected state of the pressing plate 50 to the outer cap16.

When the pressing plate 50 is downwardly moved, the first cuttingportion 62 of the cutters 52 formed at a lower surface of the pressingplate 50 penetrates an edge of the sealing member 20, and the supportingrod 66 of the hooking portion 54 penetrates a center of the sealingmember 20.

At the time of penetrating the sealing member 20, the hooking protrusion68 of the hooking portion 54 is upwardly bent thus to pass through ahole penetrated by the punch portion 70 of the supporting rod 66. Oncethe hooking protrusion 68 is positioned at an inner surface of thesealing member 20, it is elastically transformed into the original stateas an extended state.

Then, when the outer cap 16 is downwardly moved by a user's hand with aforce more than a certain degree, the elastic member 38 is elasticallytransformed and the outer cap 16 is moved. As the result, the secondhooking protrusion 42 formed at the outer cap 16 is inserted between thefirst hooking protrusions 40 formed at the inner cap 14 thereby to beengaged with each other. Also, when the outer cap 16 is rotated, therotation force of the outer cap 16 is transmitted to the inner cap 14,and thus the inner cap 14 is separated from the vessel inlet 12 withbeing rotated.

Herein, the rotation force of the outer cap 16 is transmitted to thepressing plate 50 by the lift supporting portion 210, and thus thepressing plate 50 is rotated together with the outer cap 16. When thepressing plate 50 is rotated, the cutter 52 is rotated under a contactstate to the inner circumferential surface of the vessel inlet 12, andthe second cutting portion 64 formed at both side surfaces of thesupporting portion 60 cuts the sealing member 20 as a circular shape.Since the sealing member 20 that has been removed from the vessel inlet12 is locked by the hooking protrusion 68 of the hooking portion 54, itis detached from the vessel inlet 12 together with the inner cap 14 thusto be stored in the inner cap 14.

If the contents stored in the vessel 10 of which sealing member 20 hasbeen removed is discharged outwardly through the vessel inlet 12 andthen the cap is mounted at the vessel inlet 12 again, the outer cap 16is moved towards the upper side of the inner cap 14 by the elastic forceof the elastic member 38 and the first hooking protrusion 40 is spacedfrom the second hooking protrusion 42. Accordingly, even if a childrotates the outer cap 16, the rotation force of the outer cap 16 is nottransmitted to the inner cap 14.

Also, even if the child downwardly moves the outer cap 16, the outer cap16 is not completely moved downwardly due to the weak force by theelastic force of the elastic member 38. Under the state, even if theouter cap 16 is rotated, the inclined surface 48 of the second hookingprotrusion 42 slides on the inclined surface 46 of the first stoppingprotrusion 40 and thus the inner cap 14 is not opened.

FIG. 27 is a sectional view of a child-resistant cap according to asixth embodiment of the present invention.

The child-resistant cap according to the sixth embodiment has the sameconstruction as that of the fifth embodiment except a rotation forcetransmitting portion.

More concretely, a rotation force transmitting portion 250 according tothe sixth embodiment of the present invention comprises a first hookingprotrusion 252 radially disposed at an upper surface of the inner cap 14with a certain gap and upwardly protruding with a certain width, and asecond hooking protrusion 254 radially disposed at an inner surface ofthe separation preventing protrusion 36 formed at an upper inner surfaceof the outer cap 16 with a certain gap and downwardly protruding with acertain width thus to be locked by the first hooking protrusion 252.

Since the second hooking protrusion 254 is provided with an inclinedsurface, the first hooking protrusion 252 is slid on an inclined surfaceof the second hooking protrusion 254 when the outer cap 16 is rotated.As the result, the rotation force of the outer cap 16 is not transmittedto the inner cap 14. Also, when the outer cap 16 is rotated with adownwardly pressed state, the first hooking protrusion 252 is locked bythe second hooking protrusion 254 and thus the rotation force of theouter cap 16 is transmitted to the inner cap 14. As the result, theinner cap 14 is rotated and the cap is detached from the vessel 10.

FIG. 28 is a sectional view of a child-resistant cap according to aseventh embodiment of the present invention, and FIG. 29 is a viewshowing an operation state of the child-resistant cap according to aseventh embodiment of the present invention.

The child-resistant cap according to the seventh embodiment of thepresent invention comprises an inner cap 14 mounted at a vessel inlet 12of a vessel 10 through which contents stored in the vessel 10 isdischarged outwardly; an outer cap 16 disposed at an outercircumferential surface of the inner cap 14 so as to perform an idlingwith the inner cap 14; a rotation force transmitting portion 18 formedbetween the inner cap 14 and the outer cap 16 for transmitting arotation force of the outer cap 16 to the inner cap 14 only when theouter cap 16 is downwardly moved by a force more than a certain degree;a sealing member removing unit 22 formed at the inner cap 14 forremoving a sealing member 20 sealed at the vessel inlet 12 when theinner cap 14 is detached from the vessel inlet 12, and storing theremoved sealing member 20 in the inner cap 14; and a protection plate300 movably mounted at an upper surface of the outer cap 16 forprotecting the sealing member removing unit 22 mounted at the inner cap14.

The inner cap, the outer cap, and the rotation force transmittingportion have the same construction as those aforementioned in the firstembodiment, and thus their detail explanation will be omitted. As therotation force transmitting portion 18, not only the rotation forcetransmitting portion 18 aforementioned in the first embodiment but alsothe rotation force transmitting portion 80 of the sixth embodiment canbe applied.

The protection plate 300 is formed at an upper inner circumferentialsurface of the outer cap 16 with a certain gap as a disc shape. Also, aconnection portion 302 for connecting the protection plate 300 to aninner circumferential surface of the outer cap 16, guiding theprotection plate 300 to be movable in upper and lower directions, andmaintaining a moved position of the protection plate 300 by its elasticforce is formed between an outer circumferential surface of theprotection plate 300 and an upper inner circumferential surface of theouter cap 16.

The connection portion 302 is formed between an outer circumferentialsurface of the protection plate 300 and an inner circumferential surfaceof the inner cap 14 as a thin film having a dome shape. The connectionportion 302 is elastically transformed when the protection plate 300 ispressed by a force more than a certain degree, thereby guiding theprotection plate 300 to be moved in a lower direction.

The connection portion 302 elastically maintains a current position ofthe protection plate 300. That is, when the protection plate 300 isupwardly protruding, the connection portion 302 has a convex dome shapeand maintains the current state of the protection plate 300. However,when the protection plate 300 is pressed by a force more than a certaindegree, the connection portion 302 is elastically transformed into aconcave shape and maintains a downwardly moved state of the protectionplate 300.

The sealing member removing unit 22 comprises a pressing plate 50 fixedat an upper inner circumferential surface of the inner cap 14 anddownwardly moved with the locked state being released when pressed by acertain force; a plurality of cutters 52 formed at an outer edge of alower surface of the pressing plate 50 in a circumferential directionfor penetrating the sealing member 20 when the pressing plate 50 ispressed and cutting the sealing member 20 when the cap is rotated; ahooking portion 54 downwardly protruding at a lower surface of thepressing plate 50 for hooking the sealing member 20 so that the sealingmember 20 cut by the cutter 52 can be stored in the inner cap 14 and alocking rib 17 connected between an outer circumferential surface of thepressing plate 50 and an inner circumferential surface of the inner cap14 for maintaining a fixed state of the pressing plate 50 to an innercircumferential surface of the inner cap 14 and releasing the lockedstate of the pressing plate 50 with being cut when the pressing plate 50is pressed.

The sealing member removing unit 22 according to the seventh embodimenthas the same construction as the sealing member removing unit 22 of thefifth embodiment except that the pressing plate 50 is connected to theinner circumferential surface of the inner cap 14, and thus its detailexplanation will be omitted.

In the child-resistant cap according to the seventh embodiment of thepresent invention, when the protection plate 300 is pressed, theconnection portion 302 is elastically transformed and thus theprotection plate 300 is downwardly moved. As the result, the pressingplate 50 disposed at a lower surface of the protection plate 300 isdownwardly moved thereby to remove the sealing member 29 and to storethe removed sealing member 29 in the inner cap 14. Herein, the sealingmember removing unit 22 has the same operation as that aforementioned inthe fifth embodiment, and thus its detail explanation will be omitted.

FIG. 30 is a perspective view of a child-resistant cap according to aneighth embodiment of the present invention, and FIG. 31 is a sectionalview of the child-resistant cap according to an eighth embodiment of thepresent invention.

The child-resistant cap according to the eighth embodiment of thepresent invention comprises an inner cap 14 mounted at a vessel inlet 12of a vessel 10 through which contents stored in the vessel 10 isdischarged outwardly; an outer cap 16 disposed at an outercircumferential surface of the inner cap 14 so as to perform an idlingwith the inner cap 14; a rotation force transmitting portion 18 formedbetween the inner cap 14 and the outer cap 16 for transmitting arotation force of the outer cap 16 to the inner cap 14 only when theouter cap 16 is downwardly moved by a force more than a certain degree;a sealing member removing unit 22 formed at the inner cap 14 forpartially removing a sealing member 20 when the inner cap 14 is detachedfrom the vessel inlet 12 so that the contents stored in the vessel canbe discharged outwardly little by little, and storing the removedsealing member 20 in the inner cap 14.

The inner cap 14 has a cylindrical shape of which upper and lower endsare opened, and is provided with the sealing member removing unit 22therein. A female screw portion 26 screw-coupled to a male screw portion24 formed at an outer circumferential surface of the vessel inlet 12 isformed at a lower inner circumferential surface of the inner cap 14.Also, an adhesion portion 28 for adhering an upper end of the vesselinlet 12 is protruding from an upper inner circumferential surface ofthe female screw portion 26 in a circumferential direction. A separationpreventing jaw 30 for preventing the inner cap 14 from being separatedfrom the outer cap 16 is protruding from a lower outer circumferentialsurface of the inner cap 14.

The outer cap 16 is inserted into the inner cap 14 so as to be movablein upper and lower directions, and has a cylindrical shape of whichupper and lower ends are opened. A separation preventing protrusion 36for preventing the inner cap 14 from being separated towards the upperside of the outer cap 16 is formed at an upper end of the outer cap 16.Also, an elastic member 38 supported at an upper surface of the innercap 14 and maintaining a moved state of the outer cap 16 towards theupper side of the inner cap 14 is formed at the separation preventingprotrusion 36.

The elastic member 38 has the same structure as the elastic memberaforementioned in the third embodiment, and thus its detail explanationwill be omitted.

A protection plate 13 for protecting the sealing member removing unitformed at the inner cap is formed at an upper surface of the outer cap.

The protection plate 13 has the same structure as the protection plateaforementioned in the third embodiment, and thus its detail explanationwill be omitted.

The rotation force transmitting portion 18 has the same structure as therotation force transmitting portion aforementioned in the thirdembodiment protection plate aforementioned in the third embodiment, andthus its detail explanation will be omitted.

The sealing member removing unit 22 partially removes the sealing member20 sealed at the vessel inlet 12, and stores the removed sealing member20 in the inner cap 14. That is, a small hole is formed at the sealingmember 20 so that the contents stored in the vessel 10 can be dischargedoutwardly little by little. When a child drinks the contents stored inthe vessel 10 under a state that the cap is opened, the contents storedin the vessel 10 is outwardly discharged little by little and thus thechild is protected.

The sealing member removing unit 22 comprises a pressing plate 350disposed in the inner cap 14 so as to be movable in upper and lowerdirections, and downwardly moved by the protection plate 13 when theprotection plate 13 is pressed by a user; a cutter 352 formed near thecenter of a lower surface of the pressing plate 350 in a circumferentialdirection with the same gap for penetrating the sealing member 20 whenthe pressing plate 350 is pressed and partially cutting the sealingmember 20 when the cap is rotated; a hooking portion 354 downwardlyprotruding at the lower surface of the pressing plate 350 for lockingthe sealing member 20 so that the sealing member 20 cut by the cutter352 can be received in the inner cap 14; and a connection portion 356formed between an outer circumferential surface of the pressing plate350 and an inner circumferential surface of the inner cap 14, forguiding the pressing plate 350 to be movable in upper and lowerdirections and maintaining a moved position of the pressing plate 350 byits elastic force.

The pressing plate 350 is formed as a disc shape having a diametersmaller than an inner diameter of the inner cap 14.

FIG. 32 is a perspective view of a cutter of a sealing member removingunit of the child-resistant cap according to the eighth embodiment ofthe present invention.

As shown in FIG. 32, the cutter 352 comprises a supporting portion 360formed at a lower surface of the pressing plate 350 in a circumferentialdirection with the same gap, a first cutting portion 362 sharply formedat a lower end of the supporting portion 360 and downwardly moved whenthe pressing plate 350 is pressed for penetrating the sealing member 20,a second cutting portion 364 formed on at least one side surface of bothside surfaces of the supporting portion 360 for cutting the sealingmember 20 as a circular shape when the inner cap 14 is rotated, and areceiving portion 365 concaved at a front surface of the supportingportion 360 with a certain width in a perpendicular direction forreceiving the edge of the removed sealing member 20.

As shown in FIG. 33, the hooking portion 354 comprises a supporting rod366 extending from a lower surface of the pressing plate 350 with acertain length for penetrating the sealing member 20, and a plurality ofhooking protrusions 368 formed at a lateral surface of the supportingrod 366 in a circumferential direction for stopping the sealing member20 so that the sealing member 20 cut by the cutter 352 can be stored inthe inner cap 14.

The supporting rod 366 is formed as a bar type extending towards a lowerdirection of the pressing plate 350, and a punch portion 370 forpenetrating the sealing member 20 is sharply formed at an end of thesupporting rod 366.

Preferably, four hooking protrusions 368 are extending from acircumferential surface of the supporting rod 366 with an angle of 90°.

The connection portion 356 is formed between an outer circumferentialsurface of the pressing plate 350 and an inner circumferential surfaceof the inner cap 14 as a thin film having a dome shape. The connectionportion 356 is elastically transformed when the pressing plate 350 ispressed by a force more than a certain degree, thereby guiding thepressing plate 350 to be moved in a lower direction.

The connection portion 356 elastically maintains a current position ofthe pressing plate 350. That is, when the pressing plate 350 is upwardlyprotruding, the connection portion 356 has a convex dome shape andmaintains the current state of the pressing plate 350. However, when thepressing plate 350 is pressed by a force more than a certain degree, theconnection portion 356 is elastically transformed into a concave shapeand maintains the pressed state of the pressing plate 350.

An operation of the child-resistant cap according to the presentinvention will be explained.

FIGS. 34 to 36 are views showing an operation state of thechild-resistant cap according to the eighth embodiment of the presentinvention.

When the protection plate 13 connected to the outer cap 16 is downwardlypressed by a user in order to discharge the contents stored in thevessel 10 outwardly, the connection rib 17 connected between theprotection plate 13 and the outer cap 16 is cut, and the protectionplate 13 is downwardly moved thereby to press the pressing plate 50 ofthe sealing member removing unit 22. Herein, the guide rib 15 having an‘S’ shape and connected between the protection plate 13 and the outercap 16 is extended thereby to guide the protection plate 13 to bedownwardly moved and to maintain the connected state of the protectionplate 13 to the outer cap 16.

When the pressing plate 350 is downwardly moved by the protection plate13, the connection portion 356 is elastically transformed and thepressing plate 350 is downwardly moved. Then, the first cutting portion362 of the cutters 352 formed at a lower surface of the pressing plate350 penetrates a part of the sealing member 20, and the supporting rod366 of the hooking portion 354 penetrates a center of the sealing member20.

At the time of penetrating the sealing member 20, the hooking protrusion368 of the hooking portion 354 is upwardly bent thus to pass through ahole penetrated by the punch portion 370 of the supporting rod 366. Oncethe hooking protrusion 368 is positioned at an inner surface of thesealing member 20, it is elastically transformed into the original stateas an extended state.

Then, when the outer cap 16 is downwardly moved by a user's hand with aforce more than a certain degree, the elastic member 38 is elasticallytransformed and the outer cap 16 is moved. As the result, the secondhooking protrusion 42 formed at the outer cap 16 is inserted between thefirst hooking protrusions 40 formed at the inner cap 14 thereby to beengaged with each other. Also, when the outer cap 16 is rotated, therotation force of the outer cap 16 is transmitted to the inner cap 14,and thus the inner cap 14 is separated from the vessel inlet 12 withbeing rotated.

Herein, the cutter 352 is rotated under a contact state to an innercircumferential surface of the vessel inlet 12, and the second cuttingportion 364 formed at both side surfaces of the supporting portion 360partially cuts the sealing member 20 as a circular shape thereby to forma hole 380 at the sealing member 20. Since the edge of the sealingmember 20 that has been removed from the vessel inlet 12 is received inthe receiving portion 365 formed at the supporting portion 360 and thecenter of the sealing member 20 is locked by the hooking protrusion 368of the hooking portion 354, the sealing member 20 is detached from thevessel inlet 12 together with the inner cap 14 thus to be stored in theinner cap 14.

Since the portion of the sealing member 20 cut by the sealing memberremoving unit 22 is the small hole 380, when a child drinks the contentsstored in the vessel 10 under a state that the cap is opened, thecontents is slowly discharged through the hole 380. Accordingly, anamount of the contents to be provided to the child is reduced, and thusstability can be obtained.

If the contents stored in the vessel 10 of which sealing member 20 hasbeen removed is discharged outwardly through the vessel inlet 12 andthen the cap is mounted at the vessel inlet 12 again, the outer cap 16is moved towards the upper side of the inner cap 14 by the elastic forceof the elastic member 38 and the first hooking protrusion 40 is spacedfrom the second hooking protrusion 42. Accordingly, even if a childrotates the outer cap 16, the rotation force of the outer cap 16 is nottransmitted to the inner cap 14.

Also, even if the child downwardly moves the outer cap 16, the outer cap16 is not completely moved downwardly due to the weak force by theelastic force of the elastic member 38. Under the state, even if theouter cap 16 is rotated, the inclined surface 48 of the second hookingprotrusion 42 slides on the inclined surface 46 of the first stoppingprotrusion 40 and thus the inner cap 14 is not opened.

FIG. 37 is a sectional view of a child-resistant cap according to aninth embodiment of the present invention.

The cap according to the ninth embodiment has the same construction asthe cap of the eighth embodiment except that a sealing member punchingunit 400 for punching the sealing member 20 is formed instead of thesealing member removing unit 22 of the eighth embodiment.

The child-resistant cap according to the ninth embodiment of the presentinvention comprises: an inner cap 14 mounted at a vessel inlet 12 of avessel 10 through which contents stored in the vessel 10 is dischargedoutwardly; an outer cap 16 disposed at an outer circumferential surfaceof the inner cap 14 so as to be perform an idling with the inner cap 14;a rotation force transmitting portion 18 formed between the inner cap 14and the outer cap 16 for transmitting a rotation force of the outer cap16 to the inner cap 14 only when the outer cap 16 is downwardly moved bya force more than a certain degree; and a punching unit 400 formed atthe inner cap 14 and punching the sealing member removing unit as a holehaving a certain shape for discharging the contents stored in the vessellittle by little and thus protecting a child.

The inner cap 14, the outer cap 16, and the rotation force transmittingportion 18 have the same construction and operation as thoseaforementioned in the eighth embodiment, and thus their detailexplanation will be omitted.

The sealing member punching unit 400 comprises a pressing plate 402disposed in the inner cap 14 so as to be movable in upper and lowerdirections and downwardly moved by the protection plate 13 when theprotection plate 13 is pressed, a punch 404 formed at a center of alower surface of the pressing plate 402 for forming a hole of a certainshape at the sealing member 20 when the pressing plate 402 is pressed,and a connection portion 406 connected between an outer circumferentialsurface of the pressing plate 402 and an inner circumferential surfaceof the inner cap 14 for guiding the pressing plate 402 to be moved inupper and lower directions and supporting a moved position of thepressing plate 610 by its elastic force.

The pressing plate 402 is formed as a disc shape having a diametersmaller than an inner diameter of the inner cap 14.

FIGS. 38 to 40 are views showing examples of a punch of achild-resistant cap according to the ninth of the present invention.

As shown in FIG. 38, the punch 404 comprises a supporting rod 410perpendicularly extending from the lower surface of the pressing plate402 so as to have a certain diameter, and a punching portion 412 havinga conical shape and formed at the end of the supporting rod 620 forpenetrating the sealing member 20 and forming a circular hole 420.

The punch 404 is downwardly moved when the pressing plate 402 is pressedthus to form the hole 420 at the sealing member 20, so that the contentsstored in the vessel 10 can be discharged outwardly through the hole420.

The reason why the hole 420 is formed at the sealing member 20 is inorder to prevent the contents stored in the vessel 10 from beingdischarged out at one time by discharging the contents little by littlethrough the hole 420. Accordingly, when a child drinks the contentsstored in the vessel 10 under a state that the cap is opened by mistake,a little amount of the contents is provided to the child and thereby thechild is protected.

The punch 404 can have various forms according to a kind of the contentsstored in the vessel 10.

That is, the first punch 404 has a conical shape at an end thereof, andis preferably applied when the material stored in the vessel 10 is aliquid material such as edible oil, shampoo, etc. or a liquid materialhaving a certain concentration.

When the material stored in the vessel 10 is a solid material having acertain size, a hole having a cross shape is formed at the sealingmember 20 in order to discharge the material stored in the vessel 10outwardly one by one. That is, as shown in FIG. 39, a second punch 416comprises a rod portion 418 perpendicularly extending from the lowersurface of the pressing plate 402 and having a sectional surface of across shape, and a punching portion 422 sharply formed at the end of therod portion 418 for penetrating the sealing member 20.

The second punch 416 forms a hole of a cross shape at the sealing member20. Therefore, the solid material stored in the vessel 10 such as apill, etc. is hooked at the hole thus to be discharged out one by one,so that a child can be more safely protected.

As shown in FIG. 40, a third punch 430 is applied when the materialstored in the vessel 10 is a powder-type material, and has a pluralityof pins 432 at the lower surface of the pressing plate 402. That is, thethird punch 430 is constructed so that the powder stored in the vessel10 can be slowly discharged out through a plurality of minute holesformed at the sealing member 20 when the vessel 10 is shaken.

The punch can have various forms according to a kind of the materialstored in the vessel besides the aforementioned forms.

The connection portion 406 has the same construction and operation asthat aforementioned in the eighth embodiment, and thus its detailexplanation will be omitted.

An operation of the child-resistant cap according to the ninthembodiment of the present invention will be explained.

FIG. 41 is a view showing an operation state of the child-resistant capaccording to the ninth embodiment of the present invention.

When the protecting plate 13 connected to the outer cap 16 is downwardlypressed in order to discharge the contents stored in the vessel 10outwardly, the connection portion 17 connected between the protectionplate 13 and the outer cap 16 is cut, and the protection plate 13 isdownwardly moved thereby to press the pressing plate 402 of the sealingmember removing unit 22. Herein, the guide rib 15 having an ‘S’ shapeand connected between the protection plate 13 and the outer cap 16 isextended thereby to guide the protection plate 13 to be downwardly movedand to maintain the connected state of the protection plate 13 to theouter cap 16.

Then, when the pressing plate 402 is downwardly moved by the protectionplate 13, the connection portion 406 is elastically transformed and thepressing plate 402 is downwardly moved. Then, the punch 404 formed atthe lower surface of the pressing plate 402 penetrates the sealingmember 20 thereby to form a hole at the sealing member 20.

At the time of penetrating the sealing member 20, the punch 404 formsthe hole 420 having a certain shape at a certain portion of the sealingmember 20.

Then, when the outer cap 16 is downwardly moved by a user's hand with aforce more than a certain degree, the elastic member 38 is elasticallytransformed and the outer cap 16 is moved. As the result, the secondhooking protrusion 42 formed at the outer cap 16 is inserted between thefirst hooking protrusions 40 formed at the inner cap 14 thereby to beengaged with each other. Also, when the outer cap 16 is rotated, therotation force of the outer cap 16 is transmitted to the inner cap 14,and thus the inner cap 14 is separated from the vessel inlet 12 withbeing rotated.

Since the hole 20 is formed at the sealing member 20 by the sealingmember punching unit 400, the contents stored in the vessel 10 is slowlydischarge out. Accordingly, even if a child drinks the contents storedin the vessel 10 by mistake, a little amount of the contents is providedto the child and thus the child can be protected.

1. A child-resistant cap, comprising: an inner cap mounted at a vesselinlet of a vessel; an outer cap disposed at an outer circumferentialsurface of the inner cap so as to perform an idling with the inner cap;a rotation force transmitting portion formed between the inner cap andthe outer cap for transmitting a rotation force of the outer cap to theinner cap; and a sealing member punching unit formed at the inner capfor forming a hole at the sealing member and thereby dischargingcontents stored in the vessel outwardly through the hole.
 2. The cap ofclaim 1, wherein the sealing member punching unit comprises: a pressingplate disposed in the inner cap so as to be movable in upper and lowerdirections and downwardly moved when pressed by a user; a punch formedat a lower surface of the pressing plate for forming a hole at thesealing member when the pressing plate is pressed; and a connectionportion connected between an outer circumferential surface of thepressing plate and an inner circumferential surface of the inner cap forguiding the pressing plate to be moved in upper and lower directions andmaintaining a moved position of the pressing plate by its elastic force.3. The cap of claim 2, wherein the pressing plate is formed as a discshape having a diameter smaller than an inner diameter of the inner cap.4. The cap of claim 2, wherein the punch comprises: a supporting rodperpendicularly extending from a lower surface of the pressing plate;and a punching portion having a conical shape and formed at an end ofthe supporting rod for penetrating a center of the sealing member andforming a circular hole.
 5. The cap of claim 2, wherein the punchcomprises: a rod portion perpendicularly extending from a lower surfaceof the pressing plate and having a sectional surface of a cross shape,for forming a hole having a cross shape at the sealing member; and apunching portion sharply formed at an end of the rod portion forpenetrating the sealing member.
 6. The cap of claim 2, wherein the punchis constructed as a plurality of pins formed at a lower surface of thepressing plate for forming a plurality of minute holes at the sealingmember.
 7. The cap of claim 2, wherein the connection portion is formedbetween an outer circumferential surface of the pressing plate and aninner circumferential surface of the inner cap as a thin film having adome shape, and is elastically transformed when the pressing plate ispressed by a force more than a certain degree.
 8. The cap of claim 2,wherein a protection plate for protecting the sealing member removingunit formed at the inner cap is formed at an upper surface of the outercap.
 9. The cap of claim 8, wherein the protection plate is formed at anupper inner circumferential surface of the outer cap with a certain gapas a disc shape, and a plurality of connection ribs cut when theprotection plate is downwardly moved and maintaining a fixed state ofthe protection plate to the outer cap are formed between an outercircumferential surface of the protection plate and an upper innercircumferential surface of the outer cap.